Apparatus for the manufacturing and adjustment of contact-plates in swan lamp-bases



M C. GHIJSEN.

APPARATUS ron THE MANUFACTURING AND ADJUSTMENT 0F CONTACT PLATES m SWAN LAMP BASES.

APPLICATION FILED APR. l8, I919- fag L g Patented Feb. 2 1, 1920 tearing the connecting UNITE srafilts PATENT ormon.

HUIBERT CORNELIS enrzrsmv, or MIDDELBURG, NETHERLANDS, nssmnonmo N..V. 1

THE VITRI'IE WORKS,

COMPANY, or THE NETHERLANDS.

0F MIDDELBURG, NETHERLANDS,-A LIMITED LIABILITY APPARATUS FOR 'II-IIE MANUFACTURING AND ADJUSTMENT 0F CONTACT-PLATES IN I SWAN LAMP-BASES.

To all whom it may concern Be it known that I, H IBERT ConNELrs GmJsEN, a subject of the Queen of the Netherlands, residing at Middelburg, Province of Zeeland, in the Kingdom of the Netherlands, have invented certain new provements in Apparatus for the Manufac turing and Adjustment of. Contact-Plates middle: the portion of the strip left over on. bent up in the operation each plate is then of placing the plates on the pins in the mold in which the lamp base is pressed after which in the following phase of the opera-.

tion the case is placed in the mold and the insulating mass poured The apparatus for carrying out this method according to this invention ischaracterized by a guide channel for guiding the plates into the. vertical guide opening of a plunger head movable in a vertical direction. This opening has a section correspondthe shape of the twin contact plates. At the lower end of the opening there is a small anvil with beveled surfaces on its lower edges and in the plunger head there is a spring pressed core piece with a forked shaped lower end. The fork legs glide 'on' both sides over the small anvil, and, after the connecting strip has been cut through press down the two contact plates, bend up ing to the portions of the strip remaining and place the contact plates on the pins provided for them in the mold, the pins entering into holes formed for them in the lower ends of the fork legs.

An important simplification in the method of production and adjustment of the contact plates is made whereby the dividingof each twin plate into two halves is carried out by strip which for this purpose is weakened at or near the middle.

The invention relates also to an apparatus "Specification of Letters Patent.

Application filed April 18, 1919.

and useful Im- I from the other by the strip con spring box 51 inclosing a spring 21 "Patented Feb. 24,1920.

Serial No. 291.154.

for, the application, of the second method above mentioned, characterized by the fact that the corepiece movable in the plunger head is notprovided with a chisel or other cutting tool for dividing the contact plates and that the small anvil in the plunger head is formed in the middle of its upper surface with a slit for receiving the connecting strip of the twin contact plate.

The invention is illustrated on the accompanying drawings.

Figure 1 is a longitudinal section through a plunger head with-mold.

Fig. 2 is likewise a longitudinal section of the lower portion of the plunger head taken in a plane at right angles to that of Fig. 1 with the movable core omitted; Fig. 3' is a cross section of the plunger head corresponding to the line A-A of Fig. 2. Y

Fig. 4 is a cross section corresponding to I the line B-B of Fig. 2.

Fig.6 is across section corresponding to the line C-C' of Fig. 2.;

Fig; 6 shows in side elevation the core piece with forked ends. I I Fig. 7 is an end view of the forked end of the core piece. p Fig. 8 is a plan view of the contact plates before they are inserted to the plunger head. Fig.1 9is a plan view of the contact plates after they emerge from the plunger head.

Fig. 10 is an elevation of the parts shown in Fig. 9. r

The twin contact plates are" fed into a plunger head 11 through a guide channel 15 in the'holder arm 7 by means of a feeding bar 6 having a reciprocating motion. The plunger head is formed with a sideopening 13 for the insertion of'the contact plates. The plungerlO is open on two opposite sides and'at its upper end is "screwed fast into a which at itsiuppere end presses against a collar of the core piece 20. r The core piece has at its lower end a two legged fork 24. the corepiece and forkcontinua'lly pressed upwardly. The core piece 20 with fork 24 has a common axis with the plunger and can move along this axis against the pressure of the spring. The two fork legs 25 the sec- 'The spring21 thus holds I 55 4 "the plunger head with theanvil 30 descends the contact plates work through tion ofwhich corresponds with the shape of guide openings in the conical head 12 of the-plunger head these openings .having sections corresponding to that of the fork legs. In the lower end of the plunger head there is a small anvil 30 attached by screws52 and this anvil partially closes the opening in the plunger head. With the downward motion of the fork24.-, 25 the fork sides over the anvil. guided in its motion guide box 8.

A mold 16 is placed under the guide box 8 and in the opening 17 in this mold is placed legs glide on both by the bore 9 in the the metal case for the lamp base and insulating mass. Two pins 18 are fixed to the base 19 of this mold on which the contact plates can be placed. 'The contact plates are formed with The small anvil 30 is formed on its upper holes for this purpose.

side with a transverse slit or groove 53 in which the connecting strip rests when the twin contact plate is inserted. This slit inplate being in the correct position stroke.

In the opening 13 for the insertion of the twin contact plate in the plunger head-there are guide plates 54 which are screwed on both sides-to the inner wall of the plunger,

head. On inserting the contact plates the pointed outer ends of these contact plates glidealong the guide plates until the contact plates reach the middle of the plunger head in which position the strip is above the slit 53. The contact plate then fallsdown until the connecting strip rests in the slit in the small anvil. I

The guide box 8 is provided at the side where the contact plates are inserted with an inwardly projecting portion in order to insure the passage of the contact plates from the guide channel 15 into the plunger head.

- The apparatus works follows 5 V The twin contact plate is inserted through i the guide channel of the apparatus and through the opening 13 inthe lowest portion of the plunger head. The plate then lies on the anvil 30 and rests with the strip connecting: together the two halves of the contact. plate in the slit'53 in the middle of the anvil. r

On the downward stroke of the plunger to the bottom of the mold the twin contact plate beingtaken down with it The holes with which the two halves of the contact plate are provided are thus'brought over the pins fixed inthe bottom of the mold and The plunger head is pointed for this purpose. 7

When the plunger 10, 12 comes to rest on the bottom of the mold the core piece 20, 24

still continues its motion downward and the spiral spring '21 situated in the spring box 51 is thereby compressed. a

Two vertical holes are bored in the bases of the fork legs in positions corresponding to the positions of the two pointed pins in the mo (1.

.Tlie fork legs thus move over the mold pins on the downward motion and cause the contact plate to be held. I

As the two legged plunger 2A goes farther downward the at the thinnest place and the two halves of the strip are bent up against the anvil or bridge piece. The two contact plates are thus placed in bottom of the mold.

' After this first the core piece 2 1-,'25. and

then the plunger 10, 12 commence their upward stroke and another twin contact plate can be brought'along for placing in the following mold.

What I claim is:

' 1. Apparatus for the manufacture and adjustment of contact plates in Swan lamp bases characterized by aguide channel for guiding the plates into the; vertical guide opening of a plunger head movable in a vertical direction, this opening having a sec tioncorresponding to the shape of the twin contact plates and. at the lower end of the opening there being provided a small anvil with beveled surfaces on its lower edges their correct positions on the V connecting strip tears apart and the plunger head being provided with a spring pressed core piece with a fork shaped lower end, the fork legs of the same slide onrboth sides over the after the connecting strip has been cut through, press down the two contact plates, bend up the portions of the strip left over and place the contact plates on the pins provided for them in the mold, the lower ends of the fork legs having holes into which the said pins enter.

2. Apparatus according to claim 1 characterized by the fact,that the core piece movable in the plunger head not provided with a chisel or other ,cutting tool for dividing the contact plates and that the anvil in the plunger head is formed in the middle of its upper surface with a slit for receiving the'connecting stripof the twin contact plate.

my hand.

In testimony whereof I have hereuntoset small anvil and V 

